bool amdgpu_bo_can_reclaim(struct pb_buffer *_buf)
{
struct amdgpu_winsys_bo *bo = amdgpu_winsys_bo(_buf);
if (amdgpu_bo_is_referenced_by_any_cs(bo)) {
return false;
}
return amdgpu_bo_wait(_buf, 0, RADEON_USAGE_READWRITE);
}
/* This is for the cache bufmgr. */
static boolean amdgpu_bomgr_is_buffer_busy(struct pb_manager *_mgr,
struct pb_buffer *_buf)
{
struct amdgpu_winsys_bo *bo = amdgpu_winsys_bo(_buf);
if (amdgpu_bo_is_referenced_by_any_cs(bo)) {
return TRUE;
}
if (!amdgpu_bo_wait((struct pb_buffer*)bo, 0, RADEON_USAGE_READWRITE)) {
return TRUE;
}
return FALSE;
}
static void *amdgpu_bo_map(struct radeon_winsys_cs_handle *buf,
struct radeon_winsys_cs *rcs,
enum pipe_transfer_usage usage)
{
struct amdgpu_winsys_bo *bo = (struct amdgpu_winsys_bo*)buf;
struct amdgpu_cs *cs = (struct amdgpu_cs*)rcs;
int r;
void *cpu = NULL;
/* If it's not unsynchronized bo_map, flush CS if needed and then wait. */
if (!(usage & PIPE_TRANSFER_UNSYNCHRONIZED)) {
/* DONTBLOCK doesn't make sense with UNSYNCHRONIZED. */
if (usage & PIPE_TRANSFER_DONTBLOCK) {
if (!(usage & PIPE_TRANSFER_WRITE)) {
/* Mapping for read.
*
* Since we are mapping for read, we don't need to wait
* if the GPU is using the buffer for read too
* (neither one is changing it).
*
* Only check whether the buffer is being used for write. */
if (cs && amdgpu_bo_is_referenced_by_cs_with_usage(cs, bo,
RADEON_USAGE_WRITE)) {
cs->flush_cs(cs->flush_data, RADEON_FLUSH_ASYNC, NULL);
return NULL;
}
if (!amdgpu_bo_wait((struct pb_buffer*)bo, 0,
RADEON_USAGE_WRITE)) {
return NULL;
}
} else {
if (cs && amdgpu_bo_is_referenced_by_cs(cs, bo)) {
cs->flush_cs(cs->flush_data, RADEON_FLUSH_ASYNC, NULL);
return NULL;
}
if (!amdgpu_bo_wait((struct pb_buffer*)bo, 0,
RADEON_USAGE_READWRITE)) {
return NULL;
}
}
} else {
uint64_t time = os_time_get_nano();
if (!(usage & PIPE_TRANSFER_WRITE)) {
/* Mapping for read.
*
* Since we are mapping for read, we don't need to wait
* if the GPU is using the buffer for read too
* (neither one is changing it).
*
* Only check whether the buffer is being used for write. */
if (cs && amdgpu_bo_is_referenced_by_cs_with_usage(cs, bo,
RADEON_USAGE_WRITE)) {
cs->flush_cs(cs->flush_data, 0, NULL);
}
amdgpu_bo_wait((struct pb_buffer*)bo, PIPE_TIMEOUT_INFINITE,
RADEON_USAGE_WRITE);
} else {
/* Mapping for write. */
if (cs && amdgpu_bo_is_referenced_by_cs(cs, bo))
cs->flush_cs(cs->flush_data, 0, NULL);
amdgpu_bo_wait((struct pb_buffer*)bo, PIPE_TIMEOUT_INFINITE,
RADEON_USAGE_READWRITE);
}
bo->rws->buffer_wait_time += os_time_get_nano() - time;
}
}
/* If the buffer is created from user memory, return the user pointer. */
if (bo->user_ptr)
return bo->user_ptr;
r = amdgpu_bo_cpu_map(bo->bo, &cpu);
return r ? NULL : cpu;
}